E0280**E0200 computes your example and returns E0500
In short, it treats the hex number AABB like AA.BB (note the hexadecimal point)
You have to use ** instead of *, but you can still use + and - (and >>, <<, >=>=, and <=<=)
I'm not sure about division.

Ah, got it.  Thanks!
If anyone can shed light on division, I would appreciate it.  3D projection, anyone?

And about division, what about multiplying by a reciprocal? It might work sometimes.

To find the reciprocal of a signed fixed point number "A", do this:


_E8000//A*2*^-1


Once you have the reciprocal, you can do a regular fixed point multiplication to do the actual "division".  One bit of accuracy is lost though when using this method.  I am thinking of having an inverse function built in for fixed point since I'm not using that token yet.

Yeah, I've been meaning to try ever since fixed point support.
Quigibo, I don't quite understand, how would I divide 5/2 with this example of yours?
Also, how would I convert the result of a sine or cosine to a fixed point number?

So, I could say sin(42)*2->A and A would contain the fixed point value of the sine of 42?

By the way, if you're trying to model a 3D engine, you can check the source code of the CUBE.8xp example program.  It takes a list of lines defined by 2 points and draws them all to the screen.  In the cube's case, there were 12 lines representing the edges of the cube.  I don't even think I used fixed point operations in that one since they aren't absolutely necessary, you'll have to see what optimizes better.